George A. Soper was a sanitation engineer. He was best known for discovering Mary Mallon

Mary Mallon

Mary Mallon , also known as Typhoid Mary, was the first person in the United States identified as an asymptomatic carrier of the pathogen associated with typhoid fever. She was presumed to have infected some 53 people, three of whom died, over the course of her career as a cook...

, or Typhoid Mary, a carrier of Typhoid who had no symptoms.

He received degree from Rensselaer Polytechnic Institute

Rensselaer Polytechnic Institute

Stephen Van Rensselaer established the Rensselaer School on November 5, 1824 with a letter to the Rev. Dr. Samuel Blatchford, in which van Rensselaer asked Blatchford to serve as the first president. Within the letter he set down several orders of business. He appointed Amos Eaton as the school's...

 in 1895 and a PhD from Columbia University

Columbia University

Columbia University in the City of New York is a private, Ivy League university in Manhattan, New York City. Columbia is the oldest institution of higher learning in the state of New York, the fifth oldest in the United States, and one of the country's nine Colonial Colleges founded before the...

 in 1899. He was the managing director of the American Society for the Control of Cancer, which later changed its name to the American Cancer Society

American Cancer Society

The American Cancer Society is the "nationwide community-based voluntary health organization" dedicated, in their own words, "to eliminating cancer as a major health problem by preventing cancer, saving lives, and diminishing suffering from cancer, through research, education, advocacy, and...

, from 1923-1928.